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sorry to tell you this, but he's right, i wouldn't ever tug on a line while i'm watching a video. clicking a smiley / angry face, may be.

neither would i ;)

then why did you build it that way?

it isn't intended to be used in real-time, let me know what you can infer from that.

It SHOULD be intended for real time feedback. People aren't going to remember how they felt at particular times after watching a particular movie.